zlineto.c

来自「开放源码的编译器open watcom 1.6.0版的源代码」· C语言 代码 · 共 70 行

/****************************************************************************
*
*                            Open Watcom Project
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*    Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
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*  ========================================================================
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*    This file contains Original Code and/or Modifications of Original
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* Description:  WHEN YOU FIGURE OUT WHAT THIS FILE DOES, PLEASE
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****************************************************************************/


#include "gdefn.h"


short _WCI86FAR _CGRAPH _lineto_w( double x, double y )
/*================================================

   This function draws a line from the current position to the specified
   position using the current colour and linestyle.  It returns a
   success flag. */

{
    short               success;        /* line successfully drawn */

    if( _GrProlog() ) {
        success = _L2line( _WtoPhysX( _CurrPos_w.wx ),
                           _WtoPhysY( _CurrPos_w.wy ),
                           _WtoPhysX( x ), _WtoPhysY( y ) );
        _RefreshWindow();
        _moveto_w( x, y );
        _GrEpilog();
    } else {
        success = 0;
    }
    return( success );
}

Entry( _LINETO_W, _lineto_w ) // alternate entry-point


short _WCI86FAR _CGRAPH _lineto_w_87( double x, double y )
/*=================================================*/

{
    return( _lineto_w( x, y ) );
}

Entry( _LINETO_W_87, _lineto_w_87 ) // alternate entry-point